211 (number)
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| ||||
|---|---|---|---|---|
| Cardinal | two hundred eleven | |||
| Ordinal | 211th (two hundred eleventh) | |||
| Factorization | prime | |||
| Prime | 47th | |||
| Divisors | 1, 211 | |||
| Greek numeral | ΣΙΑ´ | |||
| Roman numeral | CCXI, ccxi | |||
| Binary | 110100112 | |||
| Ternary | 212113 | |||
| Senary | 5516 | |||
| Octal | 3238 | |||
| Duodecimal | 15712 | |||
| Hexadecimal | D316 | |||
211 (two hundred [and] eleven) is the natural number following 210 and preceding 212. It is also a prime number.
In mathematics
[edit]- 211 is an odd number.
- 211 is a primorial prime, the sum of three consecutive primes (), a Chen prime, a centered decagonal prime, and a self prime.[1]
- 211 is the smallest prime separated by 12 from the nearest primes (199 and 223). It is thus a balanced prime and an isolated prime.[2]
- 211 is a repdigit in tetradecimal (111).
- 211 is the 47th prime number and therefore it is a super-prime. [3]
In other fields
[edit]211 is also a nickname for Steel Reserve, a malt liquor alcoholic beverage.
211 is also SMTP status code for system status.
References
[edit]- ^ "Sloane's A006378 Prime self numbers". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation. Retrieved 2016-05-28.
- ^ Sloane, N. J. A. (ed.). "Sequence A023186 (Lonely (or isolated) primes)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
- ^ Sloane, N. J. A. (ed.). "Sequence A006450 (Prime-indexed primes: primes with prime subscripts)". The On-Line Encyclopedia of Integer Sequences. OEIS Foundation.
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